./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:53:05,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:53:05,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:53:05,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:53:05,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:53:05,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:53:05,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:53:05,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:53:05,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:53:05,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:53:05,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:53:05,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:53:05,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:53:05,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:53:05,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:53:05,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:53:05,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:53:05,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:53:05,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:53:05,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:53:05,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:53:05,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:53:05,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:53:05,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:53:05,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:53:05,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:53:05,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:53:05,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:53:05,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:53:05,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:53:05,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:53:05,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:53:05,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:53:05,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:53:05,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:53:05,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:53:05,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:53:05,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:53:05,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:53:05,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:53:05,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:53:05,188 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-13 17:53:05,214 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:53:05,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:53:05,215 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:53:05,215 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:53:05,216 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:53:05,216 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:53:05,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:53:05,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:53:05,218 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:53:05,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:53:05,219 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:53:05,219 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 17:53:05,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:53:05,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:53:05,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:53:05,220 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 17:53:05,220 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 17:53:05,221 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 17:53:05,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:53:05,221 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 17:53:05,221 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:53:05,221 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:53:05,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:53:05,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:53:05,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:53:05,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:53:05,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:53:05,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:53:05,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:53:05,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:53:05,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:53:05,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 [2021-11-13 17:53:05,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:53:05,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:53:05,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:53:05,537 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:53:05,538 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:53:05,539 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2021-11-13 17:53:05,610 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/data/dba1f5ee2/1e314b3ddf024e5ea67429a5709a80d5/FLAG638c27b76 [2021-11-13 17:53:06,323 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:53:06,323 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2021-11-13 17:53:06,346 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/data/dba1f5ee2/1e314b3ddf024e5ea67429a5709a80d5/FLAG638c27b76 [2021-11-13 17:53:06,485 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/data/dba1f5ee2/1e314b3ddf024e5ea67429a5709a80d5 [2021-11-13 17:53:06,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:53:06,490 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 17:53:06,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:53:06,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:53:06,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:53:06,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:53:06" (1/1) ... [2021-11-13 17:53:06,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3183c665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:06, skipping insertion in model container [2021-11-13 17:53:06,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:53:06" (1/1) ... [2021-11-13 17:53:06,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:53:06,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:53:07,240 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i[33022,33035] [2021-11-13 17:53:07,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:53:07,511 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-13 17:53:07,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@12b47971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:07, skipping insertion in model container [2021-11-13 17:53:07,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:53:07,513 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-13 17:53:07,515 INFO L158 Benchmark]: Toolchain (without parser) took 1024.17ms. Allocated memory is still 113.2MB. Free memory was 71.5MB in the beginning and 69.6MB in the end (delta: 2.0MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2021-11-13 17:53:07,516 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory is still 91.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:53:07,517 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1018.42ms. Allocated memory is still 113.2MB. Free memory was 71.3MB in the beginning and 69.6MB in the end (delta: 1.7MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2021-11-13 17:53:07,519 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory is still 91.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1018.42ms. Allocated memory is still 113.2MB. Free memory was 71.3MB in the beginning and 69.6MB in the end (delta: 1.7MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:53:09,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:53:09,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:53:10,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:53:10,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:53:10,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:53:10,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:53:10,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:53:10,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:53:10,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:53:10,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:53:10,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:53:10,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:53:10,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:53:10,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:53:10,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:53:10,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:53:10,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:53:10,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:53:10,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:53:10,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:53:10,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:53:10,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:53:10,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:53:10,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:53:10,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:53:10,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:53:10,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:53:10,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:53:10,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:53:10,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:53:10,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:53:10,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:53:10,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:53:10,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:53:10,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:53:10,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:53:10,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:53:10,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:53:10,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:53:10,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:53:10,091 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-13 17:53:10,141 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:53:10,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:53:10,143 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:53:10,143 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:53:10,144 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:53:10,144 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:53:10,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:53:10,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:53:10,146 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:53:10,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:53:10,148 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:53:10,148 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 17:53:10,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:53:10,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:53:10,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:53:10,149 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 17:53:10,149 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 17:53:10,150 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 17:53:10,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:53:10,150 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 17:53:10,150 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 17:53:10,150 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 17:53:10,151 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:53:10,151 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:53:10,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:53:10,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:53:10,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:53:10,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:53:10,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:53:10,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:53:10,153 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 17:53:10,153 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 17:53:10,153 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:53:10,153 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 17:53:10,154 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 [2021-11-13 17:53:10,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:53:10,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:53:10,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:53:10,626 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:53:10,627 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:53:10,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2021-11-13 17:53:10,710 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/data/0d73ffead/f22e41c39fa04697b2d7398845811244/FLAGc91636896 [2021-11-13 17:53:11,484 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:53:11,485 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2021-11-13 17:53:11,506 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/data/0d73ffead/f22e41c39fa04697b2d7398845811244/FLAGc91636896 [2021-11-13 17:53:11,640 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/data/0d73ffead/f22e41c39fa04697b2d7398845811244 [2021-11-13 17:53:11,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:53:11,644 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 17:53:11,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:53:11,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:53:11,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:53:11,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:53:11" (1/1) ... [2021-11-13 17:53:11,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@288092f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:11, skipping insertion in model container [2021-11-13 17:53:11,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:53:11" (1/1) ... [2021-11-13 17:53:11,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:53:11,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:53:12,400 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i[33022,33035] [2021-11-13 17:53:12,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:53:12,842 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 17:53:12,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:53:12,908 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i[33022,33035] [2021-11-13 17:53:13,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:53:13,098 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:53:13,121 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i[33022,33035] [2021-11-13 17:53:13,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:53:13,318 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:53:13,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:13 WrapperNode [2021-11-13 17:53:13,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:53:13,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:53:13,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:53:13,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:53:13,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:13" (1/1) ... [2021-11-13 17:53:13,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:13" (1/1) ... [2021-11-13 17:53:13,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:13" (1/1) ... [2021-11-13 17:53:13,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:13" (1/1) ... [2021-11-13 17:53:13,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:13" (1/1) ... [2021-11-13 17:53:13,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:13" (1/1) ... [2021-11-13 17:53:13,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:13" (1/1) ... [2021-11-13 17:53:13,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:53:13,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:53:13,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:53:13,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:53:13,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:13" (1/1) ... [2021-11-13 17:53:13,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:53:13,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:53:13,773 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:53:13,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:53:13,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-13 17:53:13,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:53:13,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 17:53:13,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-13 17:53:13,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-13 17:53:13,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-13 17:53:13,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-13 17:53:13,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-13 17:53:13,823 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-13 17:53:13,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 17:53:13,823 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-13 17:53:13,823 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-13 17:53:13,823 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 17:53:13,824 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-13 17:53:13,824 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-13 17:53:13,824 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-13 17:53:13,824 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-13 17:53:13,824 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 17:53:13,825 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-13 17:53:13,825 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-13 17:53:13,825 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-13 17:53:13,825 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-13 17:53:13,825 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-13 17:53:13,826 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-13 17:53:13,826 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-13 17:53:13,826 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-13 17:53:13,826 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-13 17:53:13,826 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-13 17:53:13,826 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-13 17:53:13,827 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-13 17:53:13,827 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-13 17:53:13,827 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-13 17:53:13,827 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-13 17:53:13,827 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-13 17:53:13,828 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-13 17:53:13,829 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-13 17:53:13,829 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-13 17:53:13,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-13 17:53:13,830 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-13 17:53:13,830 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-13 17:53:13,830 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-13 17:53:13,831 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-13 17:53:13,831 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-13 17:53:13,831 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-13 17:53:13,831 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-13 17:53:13,832 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-13 17:53:13,832 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-13 17:53:13,832 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-13 17:53:13,832 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-13 17:53:13,832 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-13 17:53:13,833 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-13 17:53:13,833 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-13 17:53:13,833 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-13 17:53:13,833 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-13 17:53:13,833 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-13 17:53:13,834 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-13 17:53:13,834 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-13 17:53:13,835 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-13 17:53:13,836 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-13 17:53:13,836 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-13 17:53:13,837 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-13 17:53:13,837 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-13 17:53:13,837 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-13 17:53:13,837 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-13 17:53:13,838 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-13 17:53:13,838 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-13 17:53:13,838 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-13 17:53:13,839 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-13 17:53:13,839 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-13 17:53:13,839 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-13 17:53:13,839 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-13 17:53:13,839 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-13 17:53:13,840 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-13 17:53:13,840 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-13 17:53:13,840 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-13 17:53:13,841 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-13 17:53:13,841 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-13 17:53:13,841 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-13 17:53:13,841 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-13 17:53:13,842 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-13 17:53:13,842 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-13 17:53:13,842 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-13 17:53:13,842 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-13 17:53:13,842 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-13 17:53:13,842 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-13 17:53:13,843 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-13 17:53:13,843 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-13 17:53:13,843 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-13 17:53:13,843 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-13 17:53:13,843 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-13 17:53:13,844 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-13 17:53:13,844 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-13 17:53:13,844 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-13 17:53:13,844 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-13 17:53:13,845 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-13 17:53:13,845 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-13 17:53:13,845 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-13 17:53:13,845 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-13 17:53:13,846 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-13 17:53:13,846 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-13 17:53:13,847 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-13 17:53:13,847 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-13 17:53:13,847 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-13 17:53:13,848 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-13 17:53:13,848 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-13 17:53:13,848 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-13 17:53:13,848 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-13 17:53:13,848 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-13 17:53:13,848 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-13 17:53:13,849 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-13 17:53:13,849 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-13 17:53:13,849 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-13 17:53:13,849 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-13 17:53:13,849 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-13 17:53:13,850 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-13 17:53:13,850 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-13 17:53:13,850 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-13 17:53:13,851 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-13 17:53:13,852 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-13 17:53:13,854 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-13 17:53:13,855 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-13 17:53:13,855 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-13 17:53:13,855 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-13 17:53:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-13 17:53:13,858 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-13 17:53:13,858 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-13 17:53:13,858 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-13 17:53:13,858 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-13 17:53:13,865 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-13 17:53:13,865 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-13 17:53:13,865 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-13 17:53:13,866 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-13 17:53:13,866 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-13 17:53:13,866 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-13 17:53:13,866 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-13 17:53:13,866 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-13 17:53:13,866 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-13 17:53:13,867 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-13 17:53:13,867 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-13 17:53:13,867 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-13 17:53:13,867 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-13 17:53:13,867 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-13 17:53:13,867 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-13 17:53:13,868 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-13 17:53:13,868 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-13 17:53:13,868 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-13 17:53:13,868 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-13 17:53:13,868 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-13 17:53:13,868 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-13 17:53:13,869 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-13 17:53:13,869 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-13 17:53:13,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-13 17:53:13,869 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-13 17:53:13,869 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-13 17:53:13,869 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-13 17:53:13,869 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-13 17:53:13,870 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-13 17:53:13,870 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-13 17:53:13,870 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-13 17:53:13,870 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-13 17:53:13,870 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-13 17:53:13,870 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-13 17:53:13,871 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-13 17:53:13,871 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-13 17:53:13,871 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-13 17:53:13,871 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-13 17:53:13,871 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-13 17:53:13,871 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-13 17:53:13,872 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-13 17:53:13,872 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-13 17:53:13,872 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-13 17:53:13,872 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-13 17:53:13,872 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-13 17:53:13,872 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-13 17:53:13,873 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-13 17:53:13,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:53:13,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 17:53:13,873 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-13 17:53:13,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-13 17:53:13,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:53:13,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 17:53:13,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 17:53:13,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 17:53:13,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:53:13,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:53:13,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 17:53:13,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:53:13,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-13 17:53:13,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 17:53:13,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:53:13,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 17:53:13,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 17:53:14,534 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 17:53:25,420 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:53:25,421 INFO L299 CfgBuilder]: Removed 168 assume(true) statements. [2021-11-13 17:53:25,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:53:25 BoogieIcfgContainer [2021-11-13 17:53:25,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:53:25,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:53:25,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:53:25,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:53:25,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:53:11" (1/3) ... [2021-11-13 17:53:25,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2fbfbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:53:25, skipping insertion in model container [2021-11-13 17:53:25,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:53:13" (2/3) ... [2021-11-13 17:53:25,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2fbfbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:53:25, skipping insertion in model container [2021-11-13 17:53:25,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:53:25" (3/3) ... [2021-11-13 17:53:25,436 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test10-3.i [2021-11-13 17:53:25,442 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:53:25,443 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1193 error locations. [2021-11-13 17:53:25,495 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:53:25,503 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 17:53:25,503 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1193 error locations. [2021-11-13 17:53:25,581 INFO L276 IsEmpty]: Start isEmpty. Operand has 2442 states, 1233 states have (on average 2.227088402270884) internal successors, (2746), 2424 states have internal predecessors, (2746), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 17:53:25,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 17:53:25,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:53:25,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:53:25,592 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:53:25,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:53:25,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1848007294, now seen corresponding path program 1 times [2021-11-13 17:53:25,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:53:25,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078449761] [2021-11-13 17:53:25,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:53:25,611 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:53:25,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:53:25,613 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:53:25,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 17:53:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:25,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:53:25,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:53:26,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:53:26,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:53:26,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:53:26,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:53:26,125 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:53:26,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078449761] [2021-11-13 17:53:26,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078449761] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:53:26,127 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:53:26,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 17:53:26,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376663029] [2021-11-13 17:53:26,129 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:53:26,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:53:26,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:53:26,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:53:26,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:53:26,192 INFO L87 Difference]: Start difference. First operand has 2442 states, 1233 states have (on average 2.227088402270884) internal successors, (2746), 2424 states have internal predecessors, (2746), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:53:31,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:53:31,769 INFO L93 Difference]: Finished difference Result 3286 states and 3488 transitions. [2021-11-13 17:53:31,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:53:31,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-13 17:53:31,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:53:31,810 INFO L225 Difference]: With dead ends: 3286 [2021-11-13 17:53:31,810 INFO L226 Difference]: Without dead ends: 3283 [2021-11-13 17:53:31,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:53:31,816 INFO L933 BasicCegarLoop]: 1670 mSDtfsCounter, 2318 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4485.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2328 SdHoareTripleChecker+Valid, 2240 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.14ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5326.97ms IncrementalHoareTripleChecker+Time [2021-11-13 17:53:31,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2328 Valid, 2240 Invalid, 1684 Unknown, 0 Unchecked, 41.14ms Time], IncrementalHoareTripleChecker [23 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 5326.97ms Time] [2021-11-13 17:53:31,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3283 states. [2021-11-13 17:53:31,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3283 to 2583. [2021-11-13 17:53:32,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2583 states, 1399 states have (on average 2.0664760543245175) internal successors, (2891), 2564 states have internal predecessors, (2891), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 17:53:32,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 2926 transitions. [2021-11-13 17:53:32,021 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 2926 transitions. Word has length 7 [2021-11-13 17:53:32,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:53:32,021 INFO L470 AbstractCegarLoop]: Abstraction has 2583 states and 2926 transitions. [2021-11-13 17:53:32,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:53:32,022 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 2926 transitions. [2021-11-13 17:53:32,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 17:53:32,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:53:32,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:53:32,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:53:32,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:53:32,235 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:53:32,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:53:32,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1848007293, now seen corresponding path program 1 times [2021-11-13 17:53:32,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:53:32,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813505276] [2021-11-13 17:53:32,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:53:32,237 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:53:32,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:53:32,239 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:53:32,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 17:53:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:32,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:53:32,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:53:32,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:53:32,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:53:32,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:53:32,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:53:32,598 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:53:32,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813505276] [2021-11-13 17:53:32,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1813505276] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:53:32,599 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:53:32,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 17:53:32,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139242913] [2021-11-13 17:53:32,600 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:53:32,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:53:32,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:53:32,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:53:32,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:53:32,601 INFO L87 Difference]: Start difference. First operand 2583 states and 2926 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:53:44,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:53:44,116 INFO L93 Difference]: Finished difference Result 4061 states and 4523 transitions. [2021-11-13 17:53:44,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:53:44,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-13 17:53:44,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:53:44,139 INFO L225 Difference]: With dead ends: 4061 [2021-11-13 17:53:44,140 INFO L226 Difference]: Without dead ends: 4061 [2021-11-13 17:53:44,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:53:44,142 INFO L933 BasicCegarLoop]: 1780 mSDtfsCounter, 4282 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9903.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4290 SdHoareTripleChecker+Valid, 3361 SdHoareTripleChecker+Invalid, 2136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.74ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11343.90ms IncrementalHoareTripleChecker+Time [2021-11-13 17:53:44,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4290 Valid, 3361 Invalid, 2136 Unknown, 0 Unchecked, 38.74ms Time], IncrementalHoareTripleChecker [27 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 11343.90ms Time] [2021-11-13 17:53:44,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4061 states. [2021-11-13 17:53:44,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4061 to 2747. [2021-11-13 17:53:44,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2747 states, 1575 states have (on average 2.0526984126984127) internal successors, (3233), 2728 states have internal predecessors, (3233), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 17:53:44,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2747 states to 2747 states and 3268 transitions. [2021-11-13 17:53:44,228 INFO L78 Accepts]: Start accepts. Automaton has 2747 states and 3268 transitions. Word has length 7 [2021-11-13 17:53:44,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:53:44,228 INFO L470 AbstractCegarLoop]: Abstraction has 2747 states and 3268 transitions. [2021-11-13 17:53:44,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:53:44,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2747 states and 3268 transitions. [2021-11-13 17:53:44,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 17:53:44,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:53:44,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:53:44,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:53:44,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:53:44,441 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:53:44,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:53:44,441 INFO L85 PathProgramCache]: Analyzing trace with hash 515316259, now seen corresponding path program 1 times [2021-11-13 17:53:44,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:53:44,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458747210] [2021-11-13 17:53:44,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:53:44,443 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:53:44,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:53:44,443 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:53:44,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 17:53:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:44,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:53:44,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:53:44,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:53:44,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:53:44,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:53:44,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:53:44,742 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:53:44,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458747210] [2021-11-13 17:53:44,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [458747210] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:53:44,743 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:53:44,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 17:53:44,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564459565] [2021-11-13 17:53:44,743 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:53:44,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:53:44,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:53:44,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:53:44,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:53:44,745 INFO L87 Difference]: Start difference. First operand 2747 states and 3268 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:53:49,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:53:49,153 INFO L93 Difference]: Finished difference Result 3485 states and 4006 transitions. [2021-11-13 17:53:49,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:53:49,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-13 17:53:49,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:53:49,174 INFO L225 Difference]: With dead ends: 3485 [2021-11-13 17:53:49,175 INFO L226 Difference]: Without dead ends: 3485 [2021-11-13 17:53:49,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:53:49,178 INFO L933 BasicCegarLoop]: 2351 mSDtfsCounter, 1987 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3638.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 3193 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.77ms SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4328.80ms IncrementalHoareTripleChecker+Time [2021-11-13 17:53:49,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1997 Valid, 3193 Invalid, 1679 Unknown, 0 Unchecked, 15.77ms Time], IncrementalHoareTripleChecker [102 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 4328.80ms Time] [2021-11-13 17:53:49,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3485 states. [2021-11-13 17:53:49,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3485 to 2656. [2021-11-13 17:53:49,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2656 states, 1575 states have (on average 1.9733333333333334) internal successors, (3108), 2637 states have internal predecessors, (3108), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 17:53:49,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2656 states to 2656 states and 3143 transitions. [2021-11-13 17:53:49,261 INFO L78 Accepts]: Start accepts. Automaton has 2656 states and 3143 transitions. Word has length 12 [2021-11-13 17:53:49,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:53:49,262 INFO L470 AbstractCegarLoop]: Abstraction has 2656 states and 3143 transitions. [2021-11-13 17:53:49,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:53:49,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2656 states and 3143 transitions. [2021-11-13 17:53:49,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 17:53:49,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:53:49,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:53:49,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-13 17:53:49,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:53:49,475 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:53:49,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:53:49,476 INFO L85 PathProgramCache]: Analyzing trace with hash 515316260, now seen corresponding path program 1 times [2021-11-13 17:53:49,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:53:49,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841475353] [2021-11-13 17:53:49,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:53:49,477 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:53:49,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:53:49,478 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:53:49,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 17:53:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:49,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:53:49,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:53:49,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:53:49,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:53:49,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:53:49,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:53:49,841 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:53:49,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841475353] [2021-11-13 17:53:49,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841475353] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:53:49,842 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:53:49,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 17:53:49,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833705567] [2021-11-13 17:53:49,842 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:53:49,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:53:49,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:53:49,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:53:49,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:53:49,844 INFO L87 Difference]: Start difference. First operand 2656 states and 3143 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:54:00,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:54:00,628 INFO L93 Difference]: Finished difference Result 3611 states and 4034 transitions. [2021-11-13 17:54:00,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:54:00,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-13 17:54:00,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:54:00,648 INFO L225 Difference]: With dead ends: 3611 [2021-11-13 17:54:00,649 INFO L226 Difference]: Without dead ends: 3611 [2021-11-13 17:54:00,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:54:00,650 INFO L933 BasicCegarLoop]: 2681 mSDtfsCounter, 1441 mSDsluCounter, 2360 mSDsCounter, 0 mSdLazyCounter, 2776 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9385.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 5041 SdHoareTripleChecker+Invalid, 2803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.48ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10665.76ms IncrementalHoareTripleChecker+Time [2021-11-13 17:54:00,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1447 Valid, 5041 Invalid, 2803 Unknown, 0 Unchecked, 26.48ms Time], IncrementalHoareTripleChecker [27 Valid, 2776 Invalid, 0 Unknown, 0 Unchecked, 10665.76ms Time] [2021-11-13 17:54:00,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3611 states. [2021-11-13 17:54:00,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3611 to 2648. [2021-11-13 17:54:00,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2648 states, 1577 states have (on average 1.9581483830057071) internal successors, (3088), 2629 states have internal predecessors, (3088), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 17:54:00,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2648 states to 2648 states and 3123 transitions. [2021-11-13 17:54:00,740 INFO L78 Accepts]: Start accepts. Automaton has 2648 states and 3123 transitions. Word has length 12 [2021-11-13 17:54:00,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:54:00,741 INFO L470 AbstractCegarLoop]: Abstraction has 2648 states and 3123 transitions. [2021-11-13 17:54:00,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:54:00,741 INFO L276 IsEmpty]: Start isEmpty. Operand 2648 states and 3123 transitions. [2021-11-13 17:54:00,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 17:54:00,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:54:00,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:54:00,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-13 17:54:00,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:54:00,954 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr658REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:54:00,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:54:00,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1098922193, now seen corresponding path program 1 times [2021-11-13 17:54:00,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:54:00,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82060693] [2021-11-13 17:54:00,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:54:00,957 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:54:00,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:54:00,958 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:54:01,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 17:54:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:01,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:54:01,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:54:01,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:01,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:54:01,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:01,281 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:54:01,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82060693] [2021-11-13 17:54:01,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82060693] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:54:01,282 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:54:01,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:54:01,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909862683] [2021-11-13 17:54:01,282 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:54:01,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:54:01,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:54:01,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:54:01,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:54:01,283 INFO L87 Difference]: Start difference. First operand 2648 states and 3123 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:54:01,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:54:01,345 INFO L93 Difference]: Finished difference Result 2606 states and 3080 transitions. [2021-11-13 17:54:01,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:54:01,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-13 17:54:01,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:54:01,362 INFO L225 Difference]: With dead ends: 2606 [2021-11-13 17:54:01,362 INFO L226 Difference]: Without dead ends: 2606 [2021-11-13 17:54:01,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:54:01,364 INFO L933 BasicCegarLoop]: 2400 mSDtfsCounter, 2384 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2388 SdHoareTripleChecker+Valid, 3615 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.47ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.39ms IncrementalHoareTripleChecker+Time [2021-11-13 17:54:01,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2388 Valid, 3615 Invalid, 16 Unknown, 0 Unchecked, 6.47ms Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 26.39ms Time] [2021-11-13 17:54:01,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2021-11-13 17:54:01,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 2606. [2021-11-13 17:54:01,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2606 states, 1559 states have (on average 1.9531751122514431) internal successors, (3045), 2587 states have internal predecessors, (3045), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 17:54:01,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2606 states to 2606 states and 3080 transitions. [2021-11-13 17:54:01,436 INFO L78 Accepts]: Start accepts. Automaton has 2606 states and 3080 transitions. Word has length 15 [2021-11-13 17:54:01,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:54:01,437 INFO L470 AbstractCegarLoop]: Abstraction has 2606 states and 3080 transitions. [2021-11-13 17:54:01,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:54:01,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2606 states and 3080 transitions. [2021-11-13 17:54:01,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 17:54:01,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:54:01,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:54:01,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 17:54:01,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:54:01,652 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr682REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:54:01,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:54:01,653 INFO L85 PathProgramCache]: Analyzing trace with hash -497671989, now seen corresponding path program 1 times [2021-11-13 17:54:01,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:54:01,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161129542] [2021-11-13 17:54:01,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:54:01,654 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:54:01,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:54:01,655 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:54:01,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 17:54:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:01,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:54:01,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:54:01,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:01,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:54:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:01,985 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:54:01,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161129542] [2021-11-13 17:54:01,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161129542] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:54:01,985 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:54:01,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 17:54:01,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665780826] [2021-11-13 17:54:01,986 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:54:01,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:54:01,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:54:01,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:54:01,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:54:01,987 INFO L87 Difference]: Start difference. First operand 2606 states and 3080 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:54:02,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:54:02,100 INFO L93 Difference]: Finished difference Result 2585 states and 3052 transitions. [2021-11-13 17:54:02,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:54:02,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-13 17:54:02,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:54:02,118 INFO L225 Difference]: With dead ends: 2585 [2021-11-13 17:54:02,118 INFO L226 Difference]: Without dead ends: 2585 [2021-11-13 17:54:02,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:54:02,121 INFO L933 BasicCegarLoop]: 2355 mSDtfsCounter, 1163 mSDsluCounter, 4779 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 7134 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.87ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.18ms IncrementalHoareTripleChecker+Time [2021-11-13 17:54:02,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1167 Valid, 7134 Invalid, 64 Unknown, 0 Unchecked, 10.87ms Time], IncrementalHoareTripleChecker [32 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 60.18ms Time] [2021-11-13 17:54:02,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2585 states. [2021-11-13 17:54:02,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2585 to 2584. [2021-11-13 17:54:02,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2584 states, 1551 states have (on average 1.9445519019987105) internal successors, (3016), 2565 states have internal predecessors, (3016), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 17:54:02,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 3051 transitions. [2021-11-13 17:54:02,189 INFO L78 Accepts]: Start accepts. Automaton has 2584 states and 3051 transitions. Word has length 17 [2021-11-13 17:54:02,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:54:02,190 INFO L470 AbstractCegarLoop]: Abstraction has 2584 states and 3051 transitions. [2021-11-13 17:54:02,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:54:02,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2584 states and 3051 transitions. [2021-11-13 17:54:02,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 17:54:02,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:54:02,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:54:02,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 17:54:02,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:54:02,405 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr334REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:54:02,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:54:02,407 INFO L85 PathProgramCache]: Analyzing trace with hash -2032047504, now seen corresponding path program 1 times [2021-11-13 17:54:02,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:54:02,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068190659] [2021-11-13 17:54:02,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:54:02,408 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:54:02,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:54:02,409 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:54:02,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 17:54:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:02,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:54:02,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:54:02,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:02,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:54:02,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:02,740 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:54:02,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068190659] [2021-11-13 17:54:02,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068190659] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:54:02,740 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:54:02,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:54:02,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658165400] [2021-11-13 17:54:02,741 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:54:02,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:54:02,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:54:02,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:54:02,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:54:02,742 INFO L87 Difference]: Start difference. First operand 2584 states and 3051 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:54:02,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:54:02,857 INFO L93 Difference]: Finished difference Result 4195 states and 4766 transitions. [2021-11-13 17:54:02,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:54:02,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-13 17:54:02,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:54:02,891 INFO L225 Difference]: With dead ends: 4195 [2021-11-13 17:54:02,891 INFO L226 Difference]: Without dead ends: 4195 [2021-11-13 17:54:02,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:54:02,893 INFO L933 BasicCegarLoop]: 3857 mSDtfsCounter, 4554 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4564 SdHoareTripleChecker+Valid, 5659 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.48ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.58ms IncrementalHoareTripleChecker+Time [2021-11-13 17:54:02,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4564 Valid, 5659 Invalid, 22 Unknown, 0 Unchecked, 10.48ms Time], IncrementalHoareTripleChecker [10 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 43.58ms Time] [2021-11-13 17:54:02,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4195 states. [2021-11-13 17:54:02,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4195 to 2506. [2021-11-13 17:54:02,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2506 states, 1497 states have (on average 1.9285237140948563) internal successors, (2887), 2487 states have internal predecessors, (2887), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 17:54:02,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 2922 transitions. [2021-11-13 17:54:02,966 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 2922 transitions. Word has length 24 [2021-11-13 17:54:02,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:54:02,967 INFO L470 AbstractCegarLoop]: Abstraction has 2506 states and 2922 transitions. [2021-11-13 17:54:02,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:54:02,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 2922 transitions. [2021-11-13 17:54:02,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 17:54:02,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:54:02,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:54:02,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 17:54:03,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:54:03,182 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr16REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:54:03,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:54:03,182 INFO L85 PathProgramCache]: Analyzing trace with hash 2117616112, now seen corresponding path program 1 times [2021-11-13 17:54:03,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:54:03,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727677593] [2021-11-13 17:54:03,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:54:03,183 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:54:03,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:54:03,184 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:54:03,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 17:54:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:03,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:54:03,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:54:03,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:03,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:54:03,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:03,541 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:54:03,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727677593] [2021-11-13 17:54:03,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727677593] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:54:03,541 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:54:03,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:54:03,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817656855] [2021-11-13 17:54:03,542 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:54:03,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:54:03,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:54:03,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:54:03,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:54:03,543 INFO L87 Difference]: Start difference. First operand 2506 states and 2922 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:54:03,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:54:03,619 INFO L93 Difference]: Finished difference Result 4118 states and 4689 transitions. [2021-11-13 17:54:03,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:54:03,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-13 17:54:03,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:54:03,635 INFO L225 Difference]: With dead ends: 4118 [2021-11-13 17:54:03,636 INFO L226 Difference]: Without dead ends: 4118 [2021-11-13 17:54:03,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:54:03,637 INFO L933 BasicCegarLoop]: 3777 mSDtfsCounter, 2234 mSDsluCounter, 3532 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2244 SdHoareTripleChecker+Valid, 7309 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.66ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.77ms IncrementalHoareTripleChecker+Time [2021-11-13 17:54:03,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2244 Valid, 7309 Invalid, 12 Unknown, 0 Unchecked, 10.66ms Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 19.77ms Time] [2021-11-13 17:54:03,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4118 states. [2021-11-13 17:54:03,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4118 to 2464. [2021-11-13 17:54:03,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 1479 states have (on average 1.922920892494929) internal successors, (2844), 2445 states have internal predecessors, (2844), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 17:54:03,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 2879 transitions. [2021-11-13 17:54:03,697 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 2879 transitions. Word has length 24 [2021-11-13 17:54:03,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:54:03,698 INFO L470 AbstractCegarLoop]: Abstraction has 2464 states and 2879 transitions. [2021-11-13 17:54:03,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:54:03,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 2879 transitions. [2021-11-13 17:54:03,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-13 17:54:03,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:54:03,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:54:03,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 17:54:03,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:54:03,912 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr358REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:54:03,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:54:03,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1412495274, now seen corresponding path program 1 times [2021-11-13 17:54:03,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:54:03,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400111677] [2021-11-13 17:54:03,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:54:03,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:54:03,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:54:03,914 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:54:03,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 17:54:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:04,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:54:04,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:54:04,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:04,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:54:04,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:04,251 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:54:04,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400111677] [2021-11-13 17:54:04,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400111677] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:54:04,252 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:54:04,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 17:54:04,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217725282] [2021-11-13 17:54:04,252 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:54:04,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:54:04,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:54:04,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:54:04,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:54:04,253 INFO L87 Difference]: Start difference. First operand 2464 states and 2879 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:54:04,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:54:04,383 INFO L93 Difference]: Finished difference Result 4076 states and 4596 transitions. [2021-11-13 17:54:04,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:54:04,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-11-13 17:54:04,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:54:04,397 INFO L225 Difference]: With dead ends: 4076 [2021-11-13 17:54:04,397 INFO L226 Difference]: Without dead ends: 4076 [2021-11-13 17:54:04,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:54:04,398 INFO L933 BasicCegarLoop]: 3948 mSDtfsCounter, 4400 mSDsluCounter, 5701 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4410 SdHoareTripleChecker+Valid, 9649 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.33ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.59ms IncrementalHoareTripleChecker+Time [2021-11-13 17:54:04,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4410 Valid, 9649 Invalid, 84 Unknown, 0 Unchecked, 11.33ms Time], IncrementalHoareTripleChecker [52 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 69.59ms Time] [2021-11-13 17:54:04,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2021-11-13 17:54:04,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 2426. [2021-11-13 17:54:04,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2426 states, 1455 states have (on average 1.8948453608247422) internal successors, (2757), 2407 states have internal predecessors, (2757), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 17:54:04,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 2792 transitions. [2021-11-13 17:54:04,479 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 2792 transitions. Word has length 26 [2021-11-13 17:54:04,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:54:04,480 INFO L470 AbstractCegarLoop]: Abstraction has 2426 states and 2792 transitions. [2021-11-13 17:54:04,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:54:04,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 2792 transitions. [2021-11-13 17:54:04,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-13 17:54:04,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:54:04,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:54:04,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 17:54:04,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:54:04,697 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr40REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:54:04,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:54:04,698 INFO L85 PathProgramCache]: Analyzing trace with hash -785415766, now seen corresponding path program 1 times [2021-11-13 17:54:04,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:54:04,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668523059] [2021-11-13 17:54:04,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:54:04,698 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:54:04,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:54:04,699 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:54:04,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 17:54:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:04,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:54:04,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:54:04,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:04,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:54:05,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:05,055 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:54:05,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668523059] [2021-11-13 17:54:05,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668523059] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:54:05,055 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:54:05,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 17:54:05,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660977320] [2021-11-13 17:54:05,056 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:54:05,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:54:05,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:54:05,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:54:05,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:54:05,057 INFO L87 Difference]: Start difference. First operand 2426 states and 2792 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:54:05,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:54:05,206 INFO L93 Difference]: Finished difference Result 4037 states and 4545 transitions. [2021-11-13 17:54:05,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:54:05,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-11-13 17:54:05,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:54:05,218 INFO L225 Difference]: With dead ends: 4037 [2021-11-13 17:54:05,218 INFO L226 Difference]: Without dead ends: 4037 [2021-11-13 17:54:05,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:54:05,219 INFO L933 BasicCegarLoop]: 3662 mSDtfsCounter, 4330 mSDsluCounter, 5387 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4340 SdHoareTripleChecker+Valid, 9049 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.06ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88.72ms IncrementalHoareTripleChecker+Time [2021-11-13 17:54:05,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4340 Valid, 9049 Invalid, 84 Unknown, 0 Unchecked, 11.06ms Time], IncrementalHoareTripleChecker [52 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 88.72ms Time] [2021-11-13 17:54:05,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4037 states. [2021-11-13 17:54:05,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4037 to 2404. [2021-11-13 17:54:05,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2404 states, 1447 states have (on average 1.8852798894263993) internal successors, (2728), 2385 states have internal predecessors, (2728), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 17:54:05,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2404 states to 2404 states and 2763 transitions. [2021-11-13 17:54:05,278 INFO L78 Accepts]: Start accepts. Automaton has 2404 states and 2763 transitions. Word has length 26 [2021-11-13 17:54:05,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:54:05,278 INFO L470 AbstractCegarLoop]: Abstraction has 2404 states and 2763 transitions. [2021-11-13 17:54:05,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:54:05,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2404 states and 2763 transitions. [2021-11-13 17:54:05,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 17:54:05,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:54:05,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:54:05,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 17:54:05,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:54:05,493 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr696REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:54:05,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:54:05,493 INFO L85 PathProgramCache]: Analyzing trace with hash -253561191, now seen corresponding path program 1 times [2021-11-13 17:54:05,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:54:05,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550982870] [2021-11-13 17:54:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:54:05,494 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:54:05,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:54:05,495 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:54:05,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 17:54:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:05,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:54:05,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:54:05,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:54:05,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:05,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:54:05,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:05,960 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:54:05,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550982870] [2021-11-13 17:54:05,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550982870] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:54:05,960 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:54:05,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 17:54:05,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377641916] [2021-11-13 17:54:05,961 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:54:05,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:54:05,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:54:05,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:54:05,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:54:05,962 INFO L87 Difference]: Start difference. First operand 2404 states and 2763 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:54:10,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:54:10,299 INFO L93 Difference]: Finished difference Result 3025 states and 3303 transitions. [2021-11-13 17:54:10,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:54:10,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-13 17:54:10,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:54:10,305 INFO L225 Difference]: With dead ends: 3025 [2021-11-13 17:54:10,305 INFO L226 Difference]: Without dead ends: 3025 [2021-11-13 17:54:10,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:54:10,306 INFO L933 BasicCegarLoop]: 1518 mSDtfsCounter, 3081 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 2065 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3598.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3087 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 2086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.52ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4264.88ms IncrementalHoareTripleChecker+Time [2021-11-13 17:54:10,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3087 Valid, 2803 Invalid, 2086 Unknown, 0 Unchecked, 15.52ms Time], IncrementalHoareTripleChecker [21 Valid, 2065 Invalid, 0 Unknown, 0 Unchecked, 4264.88ms Time] [2021-11-13 17:54:10,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3025 states. [2021-11-13 17:54:10,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3025 to 2400. [2021-11-13 17:54:10,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2400 states, 1447 states have (on average 1.8825155494125778) internal successors, (2724), 2381 states have internal predecessors, (2724), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 17:54:10,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 2759 transitions. [2021-11-13 17:54:10,350 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 2759 transitions. Word has length 31 [2021-11-13 17:54:10,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:54:10,351 INFO L470 AbstractCegarLoop]: Abstraction has 2400 states and 2759 transitions. [2021-11-13 17:54:10,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:54:10,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 2759 transitions. [2021-11-13 17:54:10,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 17:54:10,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:54:10,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:54:10,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 17:54:10,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:54:10,565 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr697REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:54:10,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:54:10,565 INFO L85 PathProgramCache]: Analyzing trace with hash -253561190, now seen corresponding path program 1 times [2021-11-13 17:54:10,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:54:10,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040842743] [2021-11-13 17:54:10,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:54:10,566 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:54:10,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:54:10,567 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:54:10,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 17:54:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:10,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:54:10,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:54:10,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:54:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:11,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:54:11,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:11,576 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:54:11,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040842743] [2021-11-13 17:54:11,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040842743] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:54:11,576 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:54:11,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:54:11,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166368685] [2021-11-13 17:54:11,577 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:54:11,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:54:11,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:54:11,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:54:11,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:54:11,579 INFO L87 Difference]: Start difference. First operand 2400 states and 2759 transitions. Second operand has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:54:28,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:54:28,877 INFO L93 Difference]: Finished difference Result 3575 states and 3928 transitions. [2021-11-13 17:54:28,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:54:28,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-13 17:54:28,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:54:28,887 INFO L225 Difference]: With dead ends: 3575 [2021-11-13 17:54:28,887 INFO L226 Difference]: Without dead ends: 3575 [2021-11-13 17:54:28,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:54:28,888 INFO L933 BasicCegarLoop]: 1579 mSDtfsCounter, 6071 mSDsluCounter, 2986 mSDsCounter, 0 mSdLazyCounter, 3394 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15270.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6071 SdHoareTripleChecker+Valid, 4565 SdHoareTripleChecker+Invalid, 3422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.00ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17105.96ms IncrementalHoareTripleChecker+Time [2021-11-13 17:54:28,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6071 Valid, 4565 Invalid, 3422 Unknown, 0 Unchecked, 31.00ms Time], IncrementalHoareTripleChecker [28 Valid, 3394 Invalid, 0 Unknown, 0 Unchecked, 17105.96ms Time] [2021-11-13 17:54:28,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3575 states. [2021-11-13 17:54:28,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3575 to 2433. [2021-11-13 17:54:28,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2433 states, 1481 states have (on average 1.8642808912896691) internal successors, (2761), 2414 states have internal predecessors, (2761), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 17:54:28,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2433 states to 2433 states and 2796 transitions. [2021-11-13 17:54:28,934 INFO L78 Accepts]: Start accepts. Automaton has 2433 states and 2796 transitions. Word has length 31 [2021-11-13 17:54:28,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:54:28,935 INFO L470 AbstractCegarLoop]: Abstraction has 2433 states and 2796 transitions. [2021-11-13 17:54:28,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:54:28,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2433 states and 2796 transitions. [2021-11-13 17:54:28,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-13 17:54:28,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:54:28,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:54:28,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 17:54:29,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:54:29,150 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr372REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:54:29,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:54:29,150 INFO L85 PathProgramCache]: Analyzing trace with hash 926454328, now seen corresponding path program 1 times [2021-11-13 17:54:29,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:54:29,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1578886199] [2021-11-13 17:54:29,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:54:29,154 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:54:29,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:54:29,155 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:54:29,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 17:54:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:29,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:54:29,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:54:29,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:54:29,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:29,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:54:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:29,726 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:54:29,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1578886199] [2021-11-13 17:54:29,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1578886199] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:54:29,726 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:54:29,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 17:54:29,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574875663] [2021-11-13 17:54:29,727 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:54:29,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:54:29,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:54:29,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:54:29,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:54:29,728 INFO L87 Difference]: Start difference. First operand 2433 states and 2796 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:54:37,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:54:37,111 INFO L93 Difference]: Finished difference Result 5058 states and 5640 transitions. [2021-11-13 17:54:37,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:54:37,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-11-13 17:54:37,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:54:37,121 INFO L225 Difference]: With dead ends: 5058 [2021-11-13 17:54:37,122 INFO L226 Difference]: Without dead ends: 5058 [2021-11-13 17:54:37,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:54:37,123 INFO L933 BasicCegarLoop]: 2533 mSDtfsCounter, 4845 mSDsluCounter, 2573 mSDsCounter, 0 mSdLazyCounter, 3354 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6150.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4855 SdHoareTripleChecker+Valid, 5106 SdHoareTripleChecker+Invalid, 3405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.59ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 3354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7262.26ms IncrementalHoareTripleChecker+Time [2021-11-13 17:54:37,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4855 Valid, 5106 Invalid, 3405 Unknown, 0 Unchecked, 25.59ms Time], IncrementalHoareTripleChecker [51 Valid, 3354 Invalid, 0 Unknown, 0 Unchecked, 7262.26ms Time] [2021-11-13 17:54:37,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5058 states. [2021-11-13 17:54:37,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5058 to 2430. [2021-11-13 17:54:37,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 1481 states have (on average 1.8568534773801486) internal successors, (2750), 2411 states have internal predecessors, (2750), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 17:54:37,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 2785 transitions. [2021-11-13 17:54:37,174 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 2785 transitions. Word has length 40 [2021-11-13 17:54:37,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:54:37,175 INFO L470 AbstractCegarLoop]: Abstraction has 2430 states and 2785 transitions. [2021-11-13 17:54:37,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:54:37,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 2785 transitions. [2021-11-13 17:54:37,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-13 17:54:37,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:54:37,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:54:37,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-13 17:54:37,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:54:37,389 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr373REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:54:37,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:54:37,390 INFO L85 PathProgramCache]: Analyzing trace with hash 926454329, now seen corresponding path program 1 times [2021-11-13 17:54:37,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:54:37,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352847171] [2021-11-13 17:54:37,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:54:37,391 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:54:37,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:54:37,392 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:54:37,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 17:54:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:37,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:54:37,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:54:37,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:54:38,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:38,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:54:38,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:38,563 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:54:38,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352847171] [2021-11-13 17:54:38,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352847171] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:54:38,564 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:54:38,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:54:38,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40408323] [2021-11-13 17:54:38,564 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:54:38,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:54:38,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:54:38,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:54:38,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:54:38,566 INFO L87 Difference]: Start difference. First operand 2430 states and 2785 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:54:58,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:54:58,982 INFO L93 Difference]: Finished difference Result 5190 states and 5720 transitions. [2021-11-13 17:54:58,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:54:58,983 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-11-13 17:54:58,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:54:58,995 INFO L225 Difference]: With dead ends: 5190 [2021-11-13 17:54:58,995 INFO L226 Difference]: Without dead ends: 5190 [2021-11-13 17:54:58,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:54:58,996 INFO L933 BasicCegarLoop]: 2803 mSDtfsCounter, 6675 mSDsluCounter, 3823 mSDsCounter, 0 mSdLazyCounter, 4150 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17710.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6680 SdHoareTripleChecker+Valid, 6626 SdHoareTripleChecker+Invalid, 4184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 57.91ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20180.03ms IncrementalHoareTripleChecker+Time [2021-11-13 17:54:58,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6680 Valid, 6626 Invalid, 4184 Unknown, 0 Unchecked, 57.91ms Time], IncrementalHoareTripleChecker [34 Valid, 4150 Invalid, 0 Unknown, 0 Unchecked, 20180.03ms Time] [2021-11-13 17:54:59,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5190 states. [2021-11-13 17:54:59,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5190 to 2430. [2021-11-13 17:54:59,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 1481 states have (on average 1.8541525995948682) internal successors, (2746), 2411 states have internal predecessors, (2746), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 17:54:59,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 2781 transitions. [2021-11-13 17:54:59,047 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 2781 transitions. Word has length 40 [2021-11-13 17:54:59,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:54:59,048 INFO L470 AbstractCegarLoop]: Abstraction has 2430 states and 2781 transitions. [2021-11-13 17:54:59,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:54:59,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 2781 transitions. [2021-11-13 17:54:59,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-13 17:54:59,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:54:59,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:54:59,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 17:54:59,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:54:59,263 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr54REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:54:59,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:54:59,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1060930120, now seen corresponding path program 1 times [2021-11-13 17:54:59,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:54:59,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616379430] [2021-11-13 17:54:59,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:54:59,265 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:54:59,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:54:59,266 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:54:59,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 17:54:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:59,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:54:59,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:54:59,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:54:59,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:59,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:54:59,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:59,859 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:54:59,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616379430] [2021-11-13 17:54:59,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616379430] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:54:59,860 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:54:59,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 17:54:59,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229466699] [2021-11-13 17:54:59,860 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:54:59,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:54:59,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:54:59,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:54:59,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:54:59,861 INFO L87 Difference]: Start difference. First operand 2430 states and 2781 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:55:06,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:55:06,549 INFO L93 Difference]: Finished difference Result 4671 states and 5229 transitions. [2021-11-13 17:55:06,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:55:06,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-11-13 17:55:06,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:55:06,560 INFO L225 Difference]: With dead ends: 4671 [2021-11-13 17:55:06,560 INFO L226 Difference]: Without dead ends: 4671 [2021-11-13 17:55:06,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:55:06,561 INFO L933 BasicCegarLoop]: 2816 mSDtfsCounter, 4044 mSDsluCounter, 2380 mSDsCounter, 0 mSdLazyCounter, 3233 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5574.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4051 SdHoareTripleChecker+Valid, 5196 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.15ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6573.97ms IncrementalHoareTripleChecker+Time [2021-11-13 17:55:06,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4051 Valid, 5196 Invalid, 3276 Unknown, 0 Unchecked, 25.15ms Time], IncrementalHoareTripleChecker [43 Valid, 3233 Invalid, 0 Unknown, 0 Unchecked, 6573.97ms Time] [2021-11-13 17:55:06,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4671 states. [2021-11-13 17:55:06,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4671 to 2426. [2021-11-13 17:55:06,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2426 states, 1481 states have (on average 1.851451721809588) internal successors, (2742), 2407 states have internal predecessors, (2742), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 17:55:06,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 2777 transitions. [2021-11-13 17:55:06,607 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 2777 transitions. Word has length 40 [2021-11-13 17:55:06,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:55:06,608 INFO L470 AbstractCegarLoop]: Abstraction has 2426 states and 2777 transitions. [2021-11-13 17:55:06,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:55:06,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 2777 transitions. [2021-11-13 17:55:06,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-13 17:55:06,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:55:06,609 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:55:06,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-13 17:55:06,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:55:06,822 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr55REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:55:06,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:55:06,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1060930119, now seen corresponding path program 1 times [2021-11-13 17:55:06,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:55:06,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836219842] [2021-11-13 17:55:06,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:55:06,824 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:55:06,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:55:06,825 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:55:06,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 17:55:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:07,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:55:07,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:55:07,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:55:07,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:55:07,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:55:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:55:07,882 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:55:07,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836219842] [2021-11-13 17:55:07,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836219842] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:55:07,883 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:55:07,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:55:07,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938754759] [2021-11-13 17:55:07,883 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:55:07,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:55:07,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:55:07,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:55:07,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:55:07,885 INFO L87 Difference]: Start difference. First operand 2426 states and 2777 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:55:28,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:55:28,192 INFO L93 Difference]: Finished difference Result 4579 states and 5017 transitions. [2021-11-13 17:55:28,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:55:28,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-11-13 17:55:28,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:55:28,199 INFO L225 Difference]: With dead ends: 4579 [2021-11-13 17:55:28,200 INFO L226 Difference]: Without dead ends: 4579 [2021-11-13 17:55:28,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:55:28,200 INFO L933 BasicCegarLoop]: 3274 mSDtfsCounter, 2744 mSDsluCounter, 5786 mSDsCounter, 0 mSdLazyCounter, 6137 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17709.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2749 SdHoareTripleChecker+Valid, 9060 SdHoareTripleChecker+Invalid, 6161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.82ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 6137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20064.01ms IncrementalHoareTripleChecker+Time [2021-11-13 17:55:28,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2749 Valid, 9060 Invalid, 6161 Unknown, 0 Unchecked, 39.82ms Time], IncrementalHoareTripleChecker [24 Valid, 6137 Invalid, 0 Unknown, 0 Unchecked, 20064.01ms Time] [2021-11-13 17:55:28,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4579 states. [2021-11-13 17:55:28,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4579 to 2422. [2021-11-13 17:55:28,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2422 states, 1481 states have (on average 1.848750844024308) internal successors, (2738), 2403 states have internal predecessors, (2738), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 17:55:28,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 2773 transitions. [2021-11-13 17:55:28,242 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 2773 transitions. Word has length 40 [2021-11-13 17:55:28,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:55:28,243 INFO L470 AbstractCegarLoop]: Abstraction has 2422 states and 2773 transitions. [2021-11-13 17:55:28,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:55:28,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 2773 transitions. [2021-11-13 17:55:28,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-13 17:55:28,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:55:28,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:55:28,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 17:55:28,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:55:28,472 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr704REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:55:28,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:55:28,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1617899872, now seen corresponding path program 1 times [2021-11-13 17:55:28,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:55:28,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183363217] [2021-11-13 17:55:28,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:55:28,473 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:55:28,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:55:28,474 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:55:28,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 17:55:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:28,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:55:28,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:55:28,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:55:28,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:55:28,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:55:28,901 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:55:28,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183363217] [2021-11-13 17:55:28,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183363217] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:55:28,902 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:55:28,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:55:28,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101222435] [2021-11-13 17:55:28,902 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:55:28,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:55:28,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:55:28,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:55:28,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:55:28,904 INFO L87 Difference]: Start difference. First operand 2422 states and 2773 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:55:28,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:55:28,994 INFO L93 Difference]: Finished difference Result 2416 states and 2759 transitions. [2021-11-13 17:55:28,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:55:28,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2021-11-13 17:55:28,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:55:28,998 INFO L225 Difference]: With dead ends: 2416 [2021-11-13 17:55:28,998 INFO L226 Difference]: Without dead ends: 2416 [2021-11-13 17:55:28,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:55:29,000 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 1145 mSDsluCounter, 3214 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 5399 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.52ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.01ms IncrementalHoareTripleChecker+Time [2021-11-13 17:55:29,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1149 Valid, 5399 Invalid, 41 Unknown, 0 Unchecked, 5.52ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 40.01ms Time] [2021-11-13 17:55:29,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2021-11-13 17:55:29,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2416. [2021-11-13 17:55:29,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2416 states, 1475 states have (on average 1.8467796610169491) internal successors, (2724), 2397 states have internal predecessors, (2724), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 17:55:29,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2416 states to 2416 states and 2759 transitions. [2021-11-13 17:55:29,033 INFO L78 Accepts]: Start accepts. Automaton has 2416 states and 2759 transitions. Word has length 44 [2021-11-13 17:55:29,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:55:29,033 INFO L470 AbstractCegarLoop]: Abstraction has 2416 states and 2759 transitions. [2021-11-13 17:55:29,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:55:29,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2416 states and 2759 transitions. [2021-11-13 17:55:29,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-13 17:55:29,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:55:29,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:55:29,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 17:55:29,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:55:29,248 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr704REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:55:29,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:55:29,249 INFO L85 PathProgramCache]: Analyzing trace with hash -357192108, now seen corresponding path program 1 times [2021-11-13 17:55:29,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:55:29,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [487403375] [2021-11-13 17:55:29,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:55:29,249 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:55:29,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:55:29,250 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:55:29,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 17:55:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:29,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:55:29,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:55:29,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:55:29,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:55:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:55:30,128 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:55:30,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [487403375] [2021-11-13 17:55:30,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [487403375] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:55:30,128 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:55:30,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 17:55:30,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939578121] [2021-11-13 17:55:30,129 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:55:30,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:55:30,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:55:30,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:55:30,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:55:30,130 INFO L87 Difference]: Start difference. First operand 2416 states and 2759 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:55:30,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:55:30,432 INFO L93 Difference]: Finished difference Result 3934 states and 4411 transitions. [2021-11-13 17:55:30,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:55:30,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2021-11-13 17:55:30,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:55:30,437 INFO L225 Difference]: With dead ends: 3934 [2021-11-13 17:55:30,437 INFO L226 Difference]: Without dead ends: 3934 [2021-11-13 17:55:30,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:55:30,438 INFO L933 BasicCegarLoop]: 2273 mSDtfsCounter, 1564 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 234.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 4304 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.20ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 278.52ms IncrementalHoareTripleChecker+Time [2021-11-13 17:55:30,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1573 Valid, 4304 Invalid, 140 Unknown, 0 Unchecked, 4.20ms Time], IncrementalHoareTripleChecker [9 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 278.52ms Time] [2021-11-13 17:55:30,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3934 states. [2021-11-13 17:55:30,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3934 to 3135. [2021-11-13 17:55:30,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3135 states, 2190 states have (on average 1.8136986301369864) internal successors, (3972), 3109 states have internal predecessors, (3972), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 17:55:30,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3135 states to 3135 states and 4021 transitions. [2021-11-13 17:55:30,492 INFO L78 Accepts]: Start accepts. Automaton has 3135 states and 4021 transitions. Word has length 52 [2021-11-13 17:55:30,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:55:30,493 INFO L470 AbstractCegarLoop]: Abstraction has 3135 states and 4021 transitions. [2021-11-13 17:55:30,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:55:30,493 INFO L276 IsEmpty]: Start isEmpty. Operand 3135 states and 4021 transitions. [2021-11-13 17:55:30,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-13 17:55:30,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:55:30,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:55:30,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 17:55:30,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:55:30,703 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr437REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:55:30,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:55:30,704 INFO L85 PathProgramCache]: Analyzing trace with hash -964579511, now seen corresponding path program 1 times [2021-11-13 17:55:30,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:55:30,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980010916] [2021-11-13 17:55:30,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:55:30,705 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:55:30,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:55:30,706 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:55:30,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 17:55:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:31,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:55:31,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:55:31,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:55:31,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:55:31,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:55:31,265 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:55:31,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980010916] [2021-11-13 17:55:31,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980010916] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:55:31,266 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:55:31,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:55:31,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931435415] [2021-11-13 17:55:31,266 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:55:31,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:55:31,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:55:31,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:55:31,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:55:31,268 INFO L87 Difference]: Start difference. First operand 3135 states and 4021 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:55:31,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:55:31,338 INFO L93 Difference]: Finished difference Result 4463 states and 5423 transitions. [2021-11-13 17:55:31,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:55:31,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-11-13 17:55:31,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:55:31,343 INFO L225 Difference]: With dead ends: 4463 [2021-11-13 17:55:31,343 INFO L226 Difference]: Without dead ends: 4463 [2021-11-13 17:55:31,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:55:31,344 INFO L933 BasicCegarLoop]: 3646 mSDtfsCounter, 2139 mSDsluCounter, 5135 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2149 SdHoareTripleChecker+Valid, 8781 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.36ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.50ms IncrementalHoareTripleChecker+Time [2021-11-13 17:55:31,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2149 Valid, 8781 Invalid, 41 Unknown, 0 Unchecked, 6.36ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 33.50ms Time] [2021-11-13 17:55:31,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4463 states. [2021-11-13 17:55:31,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4463 to 3111. [2021-11-13 17:55:31,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3111 states, 2166 states have (on average 1.8153277931671283) internal successors, (3932), 3085 states have internal predecessors, (3932), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 17:55:31,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 3981 transitions. [2021-11-13 17:55:31,398 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 3981 transitions. Word has length 55 [2021-11-13 17:55:31,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:55:31,398 INFO L470 AbstractCegarLoop]: Abstraction has 3111 states and 3981 transitions. [2021-11-13 17:55:31,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:55:31,399 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 3981 transitions. [2021-11-13 17:55:31,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-13 17:55:31,400 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:55:31,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:55:31,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 17:55:31,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:55:31,619 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr73REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:55:31,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:55:31,619 INFO L85 PathProgramCache]: Analyzing trace with hash -158828041, now seen corresponding path program 1 times [2021-11-13 17:55:31,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:55:31,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157934541] [2021-11-13 17:55:31,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:55:31,620 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:55:31,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:55:31,621 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:55:31,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 17:55:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:31,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:55:31,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:55:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:55:32,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:55:32,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:55:32,215 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:55:32,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157934541] [2021-11-13 17:55:32,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157934541] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:55:32,215 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:55:32,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:55:32,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861294731] [2021-11-13 17:55:32,216 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:55:32,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:55:32,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:55:32,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:55:32,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:55:32,217 INFO L87 Difference]: Start difference. First operand 3111 states and 3981 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:55:32,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:55:32,289 INFO L93 Difference]: Finished difference Result 4208 states and 4921 transitions. [2021-11-13 17:55:32,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:55:32,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2021-11-13 17:55:32,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:55:32,294 INFO L225 Difference]: With dead ends: 4208 [2021-11-13 17:55:32,294 INFO L226 Difference]: Without dead ends: 4208 [2021-11-13 17:55:32,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:55:32,295 INFO L933 BasicCegarLoop]: 3687 mSDtfsCounter, 2130 mSDsluCounter, 5226 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2140 SdHoareTripleChecker+Valid, 8913 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.00ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.81ms IncrementalHoareTripleChecker+Time [2021-11-13 17:55:32,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2140 Valid, 8913 Invalid, 41 Unknown, 0 Unchecked, 6.00ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 36.81ms Time] [2021-11-13 17:55:32,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4208 states. [2021-11-13 17:55:32,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4208 to 3099. [2021-11-13 17:55:32,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3099 states, 2154 states have (on average 1.8161559888579386) internal successors, (3912), 3073 states have internal predecessors, (3912), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 17:55:32,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 3961 transitions. [2021-11-13 17:55:32,349 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 3961 transitions. Word has length 58 [2021-11-13 17:55:32,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:55:32,350 INFO L470 AbstractCegarLoop]: Abstraction has 3099 states and 3961 transitions. [2021-11-13 17:55:32,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:55:32,350 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 3961 transitions. [2021-11-13 17:55:32,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-13 17:55:32,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:55:32,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:55:32,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-13 17:55:32,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:55:32,565 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:55:32,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:55:32,566 INFO L85 PathProgramCache]: Analyzing trace with hash 468734877, now seen corresponding path program 1 times [2021-11-13 17:55:32,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:55:32,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244144851] [2021-11-13 17:55:32,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:55:32,566 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:55:32,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:55:32,567 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:55:32,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-13 17:55:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:32,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:55:32,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:55:32,858 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 17:55:32,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 17:55:32,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 17:55:32,907 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-13 17:55:32,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-13 17:55:32,959 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-13 17:55:32,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-13 17:55:33,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:55:33,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:55:33,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:55:33,205 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:55:33,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244144851] [2021-11-13 17:55:33,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244144851] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:55:33,206 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:55:33,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 17:55:33,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675495068] [2021-11-13 17:55:33,206 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:55:33,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:55:33,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:55:33,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:55:33,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:55:33,208 INFO L87 Difference]: Start difference. First operand 3099 states and 3961 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:55:36,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:55:36,779 INFO L93 Difference]: Finished difference Result 3327 states and 4200 transitions. [2021-11-13 17:55:36,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:55:36,780 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-11-13 17:55:36,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:55:36,785 INFO L225 Difference]: With dead ends: 3327 [2021-11-13 17:55:36,785 INFO L226 Difference]: Without dead ends: 3327 [2021-11-13 17:55:36,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:55:36,787 INFO L933 BasicCegarLoop]: 2066 mSDtfsCounter, 1027 mSDsluCounter, 7257 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3084.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 9323 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.77ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3502.58ms IncrementalHoareTripleChecker+Time [2021-11-13 17:55:36,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 9323 Invalid, 877 Unknown, 0 Unchecked, 11.77ms Time], IncrementalHoareTripleChecker [3 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 3502.58ms Time] [2021-11-13 17:55:36,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3327 states. [2021-11-13 17:55:36,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3327 to 3065. [2021-11-13 17:55:36,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3065 states, 2120 states have (on average 1.8287735849056603) internal successors, (3877), 3039 states have internal predecessors, (3877), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 17:55:36,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3065 states to 3065 states and 3926 transitions. [2021-11-13 17:55:36,830 INFO L78 Accepts]: Start accepts. Automaton has 3065 states and 3926 transitions. Word has length 61 [2021-11-13 17:55:36,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:55:36,831 INFO L470 AbstractCegarLoop]: Abstraction has 3065 states and 3926 transitions. [2021-11-13 17:55:36,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:55:36,831 INFO L276 IsEmpty]: Start isEmpty. Operand 3065 states and 3926 transitions. [2021-11-13 17:55:36,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-13 17:55:36,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:55:36,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:55:36,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-13 17:55:37,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:55:37,053 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr437REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:55:37,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:55:37,054 INFO L85 PathProgramCache]: Analyzing trace with hash 73014525, now seen corresponding path program 1 times [2021-11-13 17:55:37,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:55:37,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23525054] [2021-11-13 17:55:37,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:55:37,055 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:55:37,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:55:37,056 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:55:37,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-13 17:55:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:37,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:55:37,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:55:37,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:55:37,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:55:38,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:55:38,221 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:55:38,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23525054] [2021-11-13 17:55:38,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23525054] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:55:38,222 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:55:38,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 17:55:38,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887135903] [2021-11-13 17:55:38,222 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:55:38,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:55:38,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:55:38,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:55:38,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:55:38,223 INFO L87 Difference]: Start difference. First operand 3065 states and 3926 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:55:38,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:55:38,398 INFO L93 Difference]: Finished difference Result 4507 states and 5561 transitions. [2021-11-13 17:55:38,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:55:38,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2021-11-13 17:55:38,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:55:38,403 INFO L225 Difference]: With dead ends: 4507 [2021-11-13 17:55:38,403 INFO L226 Difference]: Without dead ends: 4507 [2021-11-13 17:55:38,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:55:38,404 INFO L933 BasicCegarLoop]: 2541 mSDtfsCounter, 1261 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 130.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 4602 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.87ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 150.87ms IncrementalHoareTripleChecker+Time [2021-11-13 17:55:38,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1269 Valid, 4602 Invalid, 64 Unknown, 0 Unchecked, 3.87ms Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 150.87ms Time] [2021-11-13 17:55:38,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4507 states. [2021-11-13 17:55:38,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4507 to 3788. [2021-11-13 17:55:38,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3788 states, 2839 states have (on average 1.792180345191969) internal successors, (5088), 3755 states have internal predecessors, (5088), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-13 17:55:38,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3788 states to 3788 states and 5151 transitions. [2021-11-13 17:55:38,461 INFO L78 Accepts]: Start accepts. Automaton has 3788 states and 5151 transitions. Word has length 63 [2021-11-13 17:55:38,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:55:38,462 INFO L470 AbstractCegarLoop]: Abstraction has 3788 states and 5151 transitions. [2021-11-13 17:55:38,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:55:38,462 INFO L276 IsEmpty]: Start isEmpty. Operand 3788 states and 5151 transitions. [2021-11-13 17:55:38,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 17:55:38,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:55:38,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:55:38,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-11-13 17:55:38,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:55:38,677 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr391REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:55:38,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:55:38,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1815743939, now seen corresponding path program 1 times [2021-11-13 17:55:38,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:55:38,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [699608301] [2021-11-13 17:55:38,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:55:38,678 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:55:38,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:55:38,680 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:55:38,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-13 17:55:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:39,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:55:39,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:55:39,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:55:39,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:55:39,956 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 17:55:39,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-11-13 17:55:39,963 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 17:55:39,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-13 17:55:40,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:55:40,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:55:45,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:55:45,209 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:55:45,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [699608301] [2021-11-13 17:55:45,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [699608301] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:55:45,210 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:55:45,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:55:45,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506329664] [2021-11-13 17:55:45,210 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:55:45,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:55:45,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:55:45,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:55:45,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 17:55:45,211 INFO L87 Difference]: Start difference. First operand 3788 states and 5151 transitions. Second operand has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:55:52,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:55:52,931 INFO L93 Difference]: Finished difference Result 5502 states and 7503 transitions. [2021-11-13 17:55:52,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:55:52,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-11-13 17:55:52,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:55:52,939 INFO L225 Difference]: With dead ends: 5502 [2021-11-13 17:55:52,939 INFO L226 Difference]: Without dead ends: 5502 [2021-11-13 17:55:52,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-13 17:55:52,940 INFO L933 BasicCegarLoop]: 2165 mSDtfsCounter, 1454 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6471.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 4546 SdHoareTripleChecker+Invalid, 3722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.94ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1550 IncrementalHoareTripleChecker+Unchecked, 7586.93ms IncrementalHoareTripleChecker+Time [2021-11-13 17:55:52,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1462 Valid, 4546 Invalid, 3722 Unknown, 0 Unchecked, 23.94ms Time], IncrementalHoareTripleChecker [62 Valid, 2110 Invalid, 0 Unknown, 1550 Unchecked, 7586.93ms Time] [2021-11-13 17:55:52,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5502 states. [2021-11-13 17:55:52,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5502 to 3948. [2021-11-13 17:55:53,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3948 states, 3028 states have (on average 1.7823645970937914) internal successors, (5397), 3913 states have internal predecessors, (5397), 34 states have call successors, (34), 5 states have call predecessors, (34), 4 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-13 17:55:53,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 5464 transitions. [2021-11-13 17:55:53,009 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 5464 transitions. Word has length 66 [2021-11-13 17:55:53,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:55:53,010 INFO L470 AbstractCegarLoop]: Abstraction has 3948 states and 5464 transitions. [2021-11-13 17:55:53,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:55:53,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 5464 transitions. [2021-11-13 17:55:53,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-13 17:55:53,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:55:53,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:55:53,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-13 17:55:53,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:55:53,240 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr393REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:55:53,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:55:53,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1173241412, now seen corresponding path program 1 times [2021-11-13 17:55:53,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:55:53,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828191952] [2021-11-13 17:55:53,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:55:53,242 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:55:53,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:55:53,243 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:55:53,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-13 17:55:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:53,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:55:53,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:55:53,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:55:53,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:55:53,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-13 17:55:54,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:55:54,335 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:55:54,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828191952] [2021-11-13 17:55:54,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828191952] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:55:54,336 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:55:54,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:55:54,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977040431] [2021-11-13 17:55:54,336 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:55:54,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:55:54,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:55:54,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:55:54,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:55:54,338 INFO L87 Difference]: Start difference. First operand 3948 states and 5464 transitions. Second operand has 6 states, 5 states have (on average 25.0) internal successors, (125), 6 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:55:59,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:55:59,647 INFO L93 Difference]: Finished difference Result 3917 states and 5385 transitions. [2021-11-13 17:55:59,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:55:59,649 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 25.0) internal successors, (125), 6 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2021-11-13 17:55:59,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:55:59,654 INFO L225 Difference]: With dead ends: 3917 [2021-11-13 17:55:59,654 INFO L226 Difference]: Without dead ends: 3917 [2021-11-13 17:55:59,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:55:59,655 INFO L933 BasicCegarLoop]: 1460 mSDtfsCounter, 4458 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4485.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4468 SdHoareTripleChecker+Valid, 2697 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.94ms SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5241.31ms IncrementalHoareTripleChecker+Time [2021-11-13 17:55:59,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4468 Valid, 2697 Invalid, 1127 Unknown, 0 Unchecked, 15.94ms Time], IncrementalHoareTripleChecker [76 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 5241.31ms Time] [2021-11-13 17:55:59,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3917 states. [2021-11-13 17:55:59,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3917 to 3777. [2021-11-13 17:55:59,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3777 states, 2892 states have (on average 1.744121715076072) internal successors, (5044), 3744 states have internal predecessors, (5044), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-13 17:55:59,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3777 states to 3777 states and 5107 transitions. [2021-11-13 17:55:59,726 INFO L78 Accepts]: Start accepts. Automaton has 3777 states and 5107 transitions. Word has length 68 [2021-11-13 17:55:59,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:55:59,726 INFO L470 AbstractCegarLoop]: Abstraction has 3777 states and 5107 transitions. [2021-11-13 17:55:59,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 25.0) internal successors, (125), 6 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:55:59,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3777 states and 5107 transitions. [2021-11-13 17:55:59,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-13 17:55:59,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:55:59,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:55:59,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-13 17:55:59,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:55:59,935 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr396REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:55:59,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:55:59,936 INFO L85 PathProgramCache]: Analyzing trace with hash -407756336, now seen corresponding path program 1 times [2021-11-13 17:55:59,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:55:59,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716542495] [2021-11-13 17:55:59,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:55:59,937 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:55:59,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:55:59,938 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:55:59,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-13 17:56:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:00,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:56:00,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:56:00,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:56:00,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-13 17:56:00,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-13 17:56:00,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:56:00,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:56:00,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:56:00,476 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:56:00,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716542495] [2021-11-13 17:56:00,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716542495] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:56:00,476 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:56:00,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:56:00,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501630897] [2021-11-13 17:56:00,476 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:56:00,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:56:00,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:56:00,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:56:00,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:56:00,478 INFO L87 Difference]: Start difference. First operand 3777 states and 5107 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:56:07,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:56:07,188 INFO L93 Difference]: Finished difference Result 3776 states and 5104 transitions. [2021-11-13 17:56:07,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:56:07,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-11-13 17:56:07,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:56:07,192 INFO L225 Difference]: With dead ends: 3776 [2021-11-13 17:56:07,192 INFO L226 Difference]: Without dead ends: 3776 [2021-11-13 17:56:07,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:56:07,193 INFO L933 BasicCegarLoop]: 2124 mSDtfsCounter, 4 mSDsluCounter, 3474 mSDsCounter, 0 mSdLazyCounter, 2903 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5685.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5598 SdHoareTripleChecker+Invalid, 2904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.26ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6606.39ms IncrementalHoareTripleChecker+Time [2021-11-13 17:56:07,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5598 Invalid, 2904 Unknown, 0 Unchecked, 18.26ms Time], IncrementalHoareTripleChecker [1 Valid, 2903 Invalid, 0 Unknown, 0 Unchecked, 6606.39ms Time] [2021-11-13 17:56:07,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2021-11-13 17:56:07,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2021-11-13 17:56:07,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 2892 states have (on average 1.7430843706777317) internal successors, (5041), 3743 states have internal predecessors, (5041), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-13 17:56:07,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5104 transitions. [2021-11-13 17:56:07,233 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5104 transitions. Word has length 71 [2021-11-13 17:56:07,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:56:07,233 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5104 transitions. [2021-11-13 17:56:07,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:56:07,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5104 transitions. [2021-11-13 17:56:07,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-13 17:56:07,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:56:07,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:56:07,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-13 17:56:07,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:56:07,435 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr397REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:56:07,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:56:07,436 INFO L85 PathProgramCache]: Analyzing trace with hash -407756335, now seen corresponding path program 1 times [2021-11-13 17:56:07,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:56:07,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108632709] [2021-11-13 17:56:07,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:56:07,436 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:56:07,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:56:07,437 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:56:07,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-13 17:56:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:07,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:56:07,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:56:07,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:56:07,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-13 17:56:07,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-13 17:56:07,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-13 17:56:07,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-13 17:56:07,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:56:07,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:56:08,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:56:08,278 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:56:08,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108632709] [2021-11-13 17:56:08,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1108632709] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:56:08,278 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:56:08,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 17:56:08,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449268443] [2021-11-13 17:56:08,278 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:56:08,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:56:08,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:56:08,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:56:08,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:56:08,279 INFO L87 Difference]: Start difference. First operand 3776 states and 5104 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:56:28,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:56:28,464 INFO L93 Difference]: Finished difference Result 3775 states and 5101 transitions. [2021-11-13 17:56:28,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:56:28,465 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-11-13 17:56:28,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:56:28,470 INFO L225 Difference]: With dead ends: 3775 [2021-11-13 17:56:28,471 INFO L226 Difference]: Without dead ends: 3775 [2021-11-13 17:56:28,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:56:28,471 INFO L933 BasicCegarLoop]: 2124 mSDtfsCounter, 4 mSDsluCounter, 4635 mSDsCounter, 0 mSdLazyCounter, 3865 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18060.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6759 SdHoareTripleChecker+Invalid, 3866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.06ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20016.86ms IncrementalHoareTripleChecker+Time [2021-11-13 17:56:28,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 6759 Invalid, 3866 Unknown, 0 Unchecked, 26.06ms Time], IncrementalHoareTripleChecker [1 Valid, 3865 Invalid, 0 Unknown, 0 Unchecked, 20016.86ms Time] [2021-11-13 17:56:28,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2021-11-13 17:56:28,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3775. [2021-11-13 17:56:28,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 2889 states have (on average 1.7438560055382486) internal successors, (5038), 3742 states have internal predecessors, (5038), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-13 17:56:28,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5101 transitions. [2021-11-13 17:56:28,538 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5101 transitions. Word has length 71 [2021-11-13 17:56:28,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:56:28,538 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5101 transitions. [2021-11-13 17:56:28,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:56:28,538 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5101 transitions. [2021-11-13 17:56:28,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-13 17:56:28,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:56:28,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:56:28,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-13 17:56:28,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:56:28,740 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr78REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:56:28,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:56:28,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1405255012, now seen corresponding path program 1 times [2021-11-13 17:56:28,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:56:28,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240633051] [2021-11-13 17:56:28,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:56:28,741 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:56:28,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:56:28,742 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:56:28,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-13 17:56:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:29,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:56:29,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:56:29,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:56:29,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-13 17:56:29,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-13 17:56:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:56:29,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:56:29,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:56:29,284 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:56:29,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240633051] [2021-11-13 17:56:29,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240633051] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:56:29,284 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:56:29,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:56:29,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983254343] [2021-11-13 17:56:29,285 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:56:29,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:56:29,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:56:29,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:56:29,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:56:29,286 INFO L87 Difference]: Start difference. First operand 3775 states and 5101 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:56:36,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:56:36,318 INFO L93 Difference]: Finished difference Result 3774 states and 5099 transitions. [2021-11-13 17:56:36,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:56:36,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-11-13 17:56:36,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:56:36,322 INFO L225 Difference]: With dead ends: 3774 [2021-11-13 17:56:36,323 INFO L226 Difference]: Without dead ends: 3774 [2021-11-13 17:56:36,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:56:36,324 INFO L933 BasicCegarLoop]: 2122 mSDtfsCounter, 4 mSDsluCounter, 3471 mSDsCounter, 0 mSdLazyCounter, 2900 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5962.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5593 SdHoareTripleChecker+Invalid, 2901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.33ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6923.58ms IncrementalHoareTripleChecker+Time [2021-11-13 17:56:36,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5593 Invalid, 2901 Unknown, 0 Unchecked, 19.33ms Time], IncrementalHoareTripleChecker [1 Valid, 2900 Invalid, 0 Unknown, 0 Unchecked, 6923.58ms Time] [2021-11-13 17:56:36,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3774 states. [2021-11-13 17:56:36,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3774 to 3774. [2021-11-13 17:56:36,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3774 states, 2889 states have (on average 1.7431637244721356) internal successors, (5036), 3741 states have internal predecessors, (5036), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-13 17:56:36,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3774 states to 3774 states and 5099 transitions. [2021-11-13 17:56:36,368 INFO L78 Accepts]: Start accepts. Automaton has 3774 states and 5099 transitions. Word has length 71 [2021-11-13 17:56:36,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:56:36,368 INFO L470 AbstractCegarLoop]: Abstraction has 3774 states and 5099 transitions. [2021-11-13 17:56:36,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:56:36,368 INFO L276 IsEmpty]: Start isEmpty. Operand 3774 states and 5099 transitions. [2021-11-13 17:56:36,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-13 17:56:36,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:56:36,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:56:36,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-13 17:56:36,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:56:36,570 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr79REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:56:36,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:56:36,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1405255013, now seen corresponding path program 1 times [2021-11-13 17:56:36,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:56:36,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267985778] [2021-11-13 17:56:36,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:56:36,572 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:56:36,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:56:36,573 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:56:36,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-13 17:56:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:36,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:56:36,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:56:37,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:56:37,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-13 17:56:37,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-13 17:56:37,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-13 17:56:37,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-13 17:56:37,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:56:37,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:56:37,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:56:37,495 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:56:37,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267985778] [2021-11-13 17:56:37,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267985778] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:56:37,495 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:56:37,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 17:56:37,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186484218] [2021-11-13 17:56:37,496 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:56:37,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:56:37,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:56:37,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:56:37,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:56:37,498 INFO L87 Difference]: Start difference. First operand 3774 states and 5099 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:57:00,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:57:00,693 INFO L93 Difference]: Finished difference Result 3773 states and 5097 transitions. [2021-11-13 17:57:00,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:57:00,695 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-11-13 17:57:00,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:57:00,701 INFO L225 Difference]: With dead ends: 3773 [2021-11-13 17:57:00,702 INFO L226 Difference]: Without dead ends: 3773 [2021-11-13 17:57:00,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:57:00,703 INFO L933 BasicCegarLoop]: 2122 mSDtfsCounter, 3 mSDsluCounter, 5794 mSDsCounter, 0 mSdLazyCounter, 4821 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20560.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7916 SdHoareTripleChecker+Invalid, 4822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.21ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22988.50ms IncrementalHoareTripleChecker+Time [2021-11-13 17:57:00,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 7916 Invalid, 4822 Unknown, 0 Unchecked, 34.21ms Time], IncrementalHoareTripleChecker [1 Valid, 4821 Invalid, 0 Unknown, 0 Unchecked, 22988.50ms Time] [2021-11-13 17:57:00,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3773 states. [2021-11-13 17:57:00,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3773 to 3773. [2021-11-13 17:57:00,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3773 states, 2887 states have (on average 1.7436785590578454) internal successors, (5034), 3740 states have internal predecessors, (5034), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-13 17:57:00,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3773 states to 3773 states and 5097 transitions. [2021-11-13 17:57:00,761 INFO L78 Accepts]: Start accepts. Automaton has 3773 states and 5097 transitions. Word has length 71 [2021-11-13 17:57:00,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:57:00,762 INFO L470 AbstractCegarLoop]: Abstraction has 3773 states and 5097 transitions. [2021-11-13 17:57:00,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:57:00,762 INFO L276 IsEmpty]: Start isEmpty. Operand 3773 states and 5097 transitions. [2021-11-13 17:57:00,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-13 17:57:00,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:57:00,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:57:00,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-13 17:57:00,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:57:00,964 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr400REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:57:00,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:57:00,965 INFO L85 PathProgramCache]: Analyzing trace with hash 491384311, now seen corresponding path program 1 times [2021-11-13 17:57:00,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:57:00,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413544846] [2021-11-13 17:57:00,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:57:00,966 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:57:00,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:57:00,967 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:57:00,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-13 17:57:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:01,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:57:01,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:57:01,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:57:01,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:57:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:57:01,676 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:57:01,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413544846] [2021-11-13 17:57:01,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413544846] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:57:01,676 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:57:01,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 17:57:01,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200746849] [2021-11-13 17:57:01,677 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:57:01,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:57:01,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:57:01,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:57:01,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:57:01,678 INFO L87 Difference]: Start difference. First operand 3773 states and 5097 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:57:01,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:57:01,871 INFO L93 Difference]: Finished difference Result 3783 states and 5113 transitions. [2021-11-13 17:57:01,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:57:01,872 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 79 [2021-11-13 17:57:01,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:57:01,885 INFO L225 Difference]: With dead ends: 3783 [2021-11-13 17:57:01,885 INFO L226 Difference]: Without dead ends: 3783 [2021-11-13 17:57:01,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:57:01,887 INFO L933 BasicCegarLoop]: 2120 mSDtfsCounter, 7 mSDsluCounter, 8454 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 117.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 10574 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.77ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 134.37ms IncrementalHoareTripleChecker+Time [2021-11-13 17:57:01,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 10574 Invalid, 62 Unknown, 0 Unchecked, 7.77ms Time], IncrementalHoareTripleChecker [10 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 134.37ms Time] [2021-11-13 17:57:01,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2021-11-13 17:57:01,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3783. [2021-11-13 17:57:01,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3783 states, 2895 states have (on average 1.7430051813471503) internal successors, (5046), 3749 states have internal predecessors, (5046), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (35), 28 states have call predecessors, (35), 31 states have call successors, (35) [2021-11-13 17:57:01,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3783 states to 3783 states and 5113 transitions. [2021-11-13 17:57:02,000 INFO L78 Accepts]: Start accepts. Automaton has 3783 states and 5113 transitions. Word has length 79 [2021-11-13 17:57:02,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:57:02,000 INFO L470 AbstractCegarLoop]: Abstraction has 3783 states and 5113 transitions. [2021-11-13 17:57:02,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:57:02,001 INFO L276 IsEmpty]: Start isEmpty. Operand 3783 states and 5113 transitions. [2021-11-13 17:57:02,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-13 17:57:02,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:57:02,002 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:57:02,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-13 17:57:02,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:57:02,203 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr400REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:57:02,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:57:02,203 INFO L85 PathProgramCache]: Analyzing trace with hash -787144713, now seen corresponding path program 1 times [2021-11-13 17:57:02,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:57:02,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544323483] [2021-11-13 17:57:02,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:57:02,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:57:02,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:57:02,206 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:57:02,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-13 17:57:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:02,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:57:02,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:57:02,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:57:02,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:57:03,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:57:03,145 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:57:03,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544323483] [2021-11-13 17:57:03,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544323483] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:57:03,146 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:57:03,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-13 17:57:03,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591169104] [2021-11-13 17:57:03,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:57:03,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 17:57:03,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:57:03,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 17:57:03,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:57:03,148 INFO L87 Difference]: Start difference. First operand 3783 states and 5113 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:57:03,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:57:03,762 INFO L93 Difference]: Finished difference Result 3797 states and 5137 transitions. [2021-11-13 17:57:03,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 17:57:03,769 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 81 [2021-11-13 17:57:03,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:57:03,782 INFO L225 Difference]: With dead ends: 3797 [2021-11-13 17:57:03,783 INFO L226 Difference]: Without dead ends: 3793 [2021-11-13 17:57:03,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:57:03,784 INFO L933 BasicCegarLoop]: 2122 mSDtfsCounter, 28 mSDsluCounter, 10578 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 297.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 12700 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.49ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 340.24ms IncrementalHoareTripleChecker+Time [2021-11-13 17:57:03,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 12700 Invalid, 155 Unknown, 0 Unchecked, 9.49ms Time], IncrementalHoareTripleChecker [27 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 340.24ms Time] [2021-11-13 17:57:03,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3793 states. [2021-11-13 17:57:03,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3793 to 3789. [2021-11-13 17:57:03,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3789 states, 2901 states have (on average 1.7421578765942778) internal successors, (5054), 3755 states have internal predecessors, (5054), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (35), 28 states have call predecessors, (35), 31 states have call successors, (35) [2021-11-13 17:57:03,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3789 states to 3789 states and 5121 transitions. [2021-11-13 17:57:03,858 INFO L78 Accepts]: Start accepts. Automaton has 3789 states and 5121 transitions. Word has length 81 [2021-11-13 17:57:03,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:57:03,859 INFO L470 AbstractCegarLoop]: Abstraction has 3789 states and 5121 transitions. [2021-11-13 17:57:03,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:57:03,859 INFO L276 IsEmpty]: Start isEmpty. Operand 3789 states and 5121 transitions. [2021-11-13 17:57:03,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-13 17:57:03,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:57:03,861 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:57:03,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-13 17:57:04,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:57:04,075 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr400REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-13 17:57:04,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:57:04,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1438516215, now seen corresponding path program 2 times [2021-11-13 17:57:04,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:57:04,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386899656] [2021-11-13 17:57:04,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 17:57:04,077 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:57:04,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:57:04,078 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:57:04,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9480ff9e-4f9c-4286-9028-98a3fdaeb4fb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-13 17:57:04,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 17:57:04,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:57:04,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:57:04,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:57:04,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:57:04,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 17:57:04,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 17:57:04,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 17:57:04,767 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-13 17:57:04,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-13 17:57:04,917 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 17:57:04,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-13 17:57:05,183 INFO L354 Elim1Store]: treesize reduction 229, result has 11.2 percent of original size [2021-11-13 17:57:05,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 66 treesize of output 86 [2021-11-13 17:57:10,987 INFO L354 Elim1Store]: treesize reduction 1963, result has 5.1 percent of original size [2021-11-13 17:57:10,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 118 treesize of output 150 [2021-11-13 17:57:21,418 INFO L354 Elim1Store]: treesize reduction 876, result has 0.1 percent of original size [2021-11-13 17:57:21,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 157 treesize of output 67 [2021-11-13 17:57:21,658 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-13 17:57:21,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:57:34,315 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~user~0.base_331 (_ BitVec 32))) (or (forall ((|main_#t~mem11| (_ BitVec 32)) (|main_#t~mem12| (_ BitVec 32)) (main_~user~0.offset (_ BitVec 32)) (|main_#t~mem13| (_ BitVec 32))) (bvslt (let ((.cse0 (select (store |c_#memory_int| v_main_~user~0.base_331 (let ((.cse1 (bvmul |main_#t~mem12| |main_#t~mem13|))) (store (store (store (store (store (store (store (store (select |c_#memory_int| v_main_~user~0.base_331) main_~user~0.offset ((_ extract 7 0) |main_#t~mem11|)) (bvadd main_~user~0.offset (_ bv1 32)) ((_ extract 15 8) |main_#t~mem11|)) (bvadd (_ bv2 32) main_~user~0.offset) ((_ extract 23 16) |main_#t~mem11|)) (bvadd (_ bv3 32) main_~user~0.offset) ((_ extract 31 24) |main_#t~mem11|)) (bvadd (_ bv4 32) main_~user~0.offset) ((_ extract 7 0) .cse1)) (bvadd main_~user~0.offset (_ bv5 32)) ((_ extract 15 8) .cse1)) (bvadd (_ bv6 32) main_~user~0.offset) ((_ extract 23 16) .cse1)) (bvadd main_~user~0.offset (_ bv7 32)) ((_ extract 31 24) .cse1)))) |c_main_~#i~0.base|))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_main_~#i~0.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_main_~#i~0.offset|))) (select .cse0 (bvadd |c_main_~#i~0.offset| (_ bv1 32)))) (select .cse0 |c_main_~#i~0.offset|))) (_ bv10 32))) (not (= (_ bv0 1) (select |c_#valid| v_main_~user~0.base_331))))) is different from false